US Bridges

Nfa A329 over Wilmouth Creek

Fair

Cannon County, Tennessee · Near Gassaway · Structure no. 080A3290001

Built
1965
60 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
30 ft
2 main spans
Daily traffic
20
2020 count
Owner
County
County Highway Agency

About this bridge

Nfa A329 over Wilmouth Creek is a steel continuous stringer/multi-beam or girder carrying Nfa A329 over Wilmouth Creek in Cannon County, Tennessee. It was built in 1965, so it is 60 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20 vehicles a day, roughly 4% of them trucks, projected to reach 32 by 2041. The structure is 30 ft (9.1 m) long and 12 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesNfa A329
CrossesWilmouth Creek
LocationNear Gassaway
RouteCounty Highway 329
CountyCannon County
StateTennessee
Coordinates35.90197, -85.99123
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating19.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span15 ft (4.6 m)
Deck width12 ft (3.7 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2020)
Projected traffic32 by 2041
Trucks4%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$421,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Nfa A329 over Wilmouth Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is Nfa A329 over Wilmouth Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does Nfa A329 over Wilmouth Creek carry?

About 20 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Nfa A329 over Wilmouth Creek?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 12 ft wide.

Who owns Nfa A329 over Wilmouth Creek?

It is owned by the County Highway Agency.